66.4% is the change from 497 to 827
Calculation steps:
[( 827 - 497 ) ÷ 497] x 100 = 66.4%
Formula
Percentage change = [(827 - 497) / 497] x 100
Subtract the new number by the original number
827 - 497 = 330
330 ÷ 497 = 0.6639839034205232
0.6639839034205232 x 100 = 66.4%